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What Formula Is Easiest to Digest?

📅 Updated February 2026⏱️ 6 min readNEW

TL;DR

The easiest formulas to digest use partially hydrolyzed proteins or A2 goat milk, completely avoiding intact A1 cow's milk. Many conventional "gentle" formulas swap healthy lactose for 48% corn syrup solids to ease digestion. You can fix your baby's stomach troubles without feeding them loads of processed sugar.

🔑 Key Findings

1

Conventional hypoallergenic formulas can contain up to 48% corn syrup solids.

2

A2 milk and goat milk lack the inflammatory A1 protein, making them significantly easier for infants to digest.

3

A 60:40 whey-to-casein ratio mimics breast milk and speeds up gastric emptying.

4

Kabrita became the first European goat milk infant formula to secure FDA approval in early 2024.

The Short Answer

The easiest formula to digest is one made with partially hydrolyzed proteins or naturally gentle A2 milk. Our top choice is Bobbie Organic Gentle, which uses 100% partially broken-down whey protein while keeping natural lactose as the primary carbohydrate. Is Bobbie Good

If your baby struggles with cow's milk, goat milk formulas like Kabrita or Kendamil Goat are exceptional alternatives. They naturally contain smaller fat globules and A2 proteins that form a 20% softer, more digestible curd in your baby's stomach compared to standard cow's milk.

Why This Matters

A baby's digestive system is incredibly immature at birth. Standard cow's milk formulas contain large, complex A1 proteins that take immense effort for a tiny gut to process. This is exactly why so many infants struggle with gas, severe constipation, and colic during their first few months of life. Best Formula Gassy Babies

Most conventional brands try to solve this by creating "gentle" or "sensitive" lines. But their shortcut solution often involves replacing natural dairy lactose with processed corn syrup. Corn Syrup Baby Formula This fixes the digestion issue for the exceptionally rare baby with true lactose intolerance, but it introduces massive amounts of added sugar to your infant's daily diet.

You don't have to trade healthy ingredients for digestive peace. By choosing partially hydrolyzed proteins or A2 milk, you can soothe your baby's stomach without feeding them 48% corn syrup solids. A2 Milk Formula Understanding the structural difference between milk proteins is the only way to find a formula that is both gentle and genuinely nutritious.

What's Actually In Gentle Formulas

  • Partially Hydrolyzed Proteins — These are milk proteins that have been pre-digested into smaller pieces. This means your baby's stomach doesn't have to work nearly as hard to break them down.
  • A2 Beta-Casein — A specific type of milk protein naturally found in breast milk, goat milk, and select cow's milk. It forms a much softer curd in the stomach than the inflammatory A1 protein found in most standard formulas. A2 Milk Formula
  • Corn Syrup Solids — A highly processed carbohydrate used as a cheap replacement for natural lactose. It can aggressively spike blood sugar and makes up nearly 50% of the ingredients in conventional hypoallergenic formulas. Is Corn Syrup Formula Bad
  • Carrageenan — A controversial thickening agent occasionally found in liquid ready-to-feed gentle formulas. It has been linked to severe intestinal inflammation and digestive distress in clinical studies. Carrageenan Formula

What to Look For

Green Flags:

  • 100% Whey Protein — Whey digests significantly faster and easier than heavy casein. Look for a 60:40 whey-to-casein ratio, which closely mimics human breast milk and speeds up digestion. Closest To Breast Milk
  • Lactose as the Primary Carb — True lactose intolerance in infants is exceptionally rare. Lactose promotes healthy gut bacteria development and drastically improves calcium absorption.
  • A2 or Goat Milk — These milks naturally lack the A1 protein that triggers digestive discomfort. Goat milk also features smaller fat molecules that are much easier for tiny tummies to process. Goat Vs Cow Milk Formula

Red Flags:

  • Intact A1 Cow's Milk — This is the standard, unbroken protein in most commercial baby formulas. It is notoriously hard for sensitive infants to digest and frequently causes constipation. Best Formula Constipation
  • Maltodextrin and Corn Syrup — These are high-glycemic sweeteners used to replace natural dairy sugars in sensitive lines. They spike your baby's blood sugar and offer absolutely zero nutritional advantage over lactose.
  • Palm Oil — Often used to mimic the natural palmitic acid found in human breast milk. It reacts with calcium in the gut to form hard "soaps," leading to severe, painful constipation. Palm Oil Formula Bad

The Best Options

Finding a genuinely clean, easy-to-digest formula used to require importing European brands, but the US market has vastly improved. Here are the best gentle formulas available right now.

BrandProductVerdictWhy
BobbieOrganic Gentle100% lactose with partially hydrolyzed proteins and zero corn syrup.
KabritaGoat Milk Infant FormulaFDA-approved in 2024, naturally A2, and incredibly gentle.
KendamilGoat Infant FormulaWhole goat milk with a natural 60:40 whey-to-casein ratio.
Baby's OnlyA2 Organic MilkUses A2 cow's milk for easier digestion at an excellent price point.
EnfamilNutramigen⚠️Highly effective for severe milk allergies but contains 48% corn syrup solids.
SimilacPro-Total Comfort🚫Not organic and loaded with maltodextrin and processed seed oils.

The Bottom Line

1. Prioritize hydrolyzed proteins or A2 milk first. These tackle the root cause of digestion issues without compromising on your baby's nutrition.

2. Don't fall for the lactose-free trap. Unless your pediatrician diagnoses a true allergy, your baby needs lactose for optimal brain and gut development.

3. Check the first ingredient. If a "gentle" formula lists corn syrup or maltodextrin before milk, put it right back on the shelf.

FAQ

What is the difference between gentle and hypoallergenic formulas?

Gentle formulas use partially hydrolyzed proteins that are broken down slightly for easier digestion. Hypoallergenic formulas use extensively hydrolyzed proteins for babies with diagnosed milk protein allergies. Hypoallergenic options almost always rely on corn syrup instead of lactose because they strip out all dairy components.

Does goat milk formula really help with gas?

Yes, because goat milk naturally contains A2 proteins and smaller fat globules than traditional cow's milk. These form a softer, looser curd in the baby's stomach that moves through the digestive tract significantly faster. Goat Vs Cow Milk Formula

Why do some gentle formulas cause more spit-up?

Formulas with broken-down proteins are noticeably thinner than standard, intact-protein formulas. This thinner liquid consistency can sometimes lead to increased reflux in babies who lack muscle control in their esophagus. If spit-up is the main issue rather than gas, look into thickened anti-reflux options instead. Best Formula Reflux


References (8)
  1. 1. prnewswire.com
  2. 2. gimmethegoodstuff.org
  3. 3. ausnutria-nutrition-institute.com
  4. 4. babycenter.com
  5. 5. kabrita.com
  6. 6. foodmanufacturing.com
  7. 7. thequalityedit.com
  8. 8. babylist.com

🛒 Product Recommendations

Organic Gentle

Bobbie

Uses 100% partially hydrolyzed whey protein and keeps lactose as the primary carb.

Recommended
Goat Milk Infant Formula

Kabrita

FDA-approved in 2024, naturally A2, and incredibly gentle on sensitive tummies.

Recommended
🚫
Pro-Total Comfort

Similac

Loaded with maltodextrin, sugar, and processed seed oils instead of lactose.

Avoid

Kendamil Goat Infant Formula

Kendamil

Uses whole goat milk which naturally contains A2 beta-casein and forms a softer curd than cow's milk. It is free from palm oil and soy, utilizing a 60:40 whey-to-casein ratio that mimics human breast milk.

Recommended
Pepticate Infant Formula

Pepticate

A rare extensively hydrolyzed formula (eHF) that uses lactose as its primary carbohydrate instead of corn syrup. It is designed for cows' milk allergy (CMA) but avoids the high sugar content found in competitors like Nutramigen.

Recommended

Bubs Supreme A2 Beta-Casein Formula

Bubs Australia

Certified by the Clean Label Project, this formula uses A2 cow's milk which lacks the inflammatory A1 protein. It contains no maltodextrin, corn syrup, or palm oil, relying on lactose for digestion.

Recommended

Nara Organic Whole Milk Formula

Nara

Made with biodynamic, grass-fed whole milk that naturally provides essential fats without heavy reliance on vegetable oils. It is strictly lactose-based and completely free of soy and palm oil.

Recommended

Organic Ultra Gentle Formula

Burt's Bees Baby

Unlike their 'Sensitive' line, this 'Ultra Gentle' version uses organic lactose as the carbohydrate source alongside partially hydrolyzed proteins. It avoids the glucose syrup solids found in many organic competitors.

Recommended

Holle Goat Milk Formula (Stage 1)

Holle

Holds the Demeter certification, the highest standard for organic farming in Europe. It uses whole goat milk and lactose without any added starch or maltodextrin in Stage 1.

Recommended
Whole Nutrition Infant Formula

ByHeart

Uses a unique protein blend with alpha-lactalbumin and an 80:20 whey-to-casein ratio, the closest to early breast milk (colostrum). It is the first US formula to use whole organic milk and exclude palm oil and corn syrup.

Recommended
Pure Bliss Organic with A2 Milk

Similac

A mainstream option that actually uses lactose and non-fat A2 milk instead of corn syrup. Unlike standard Similac lines, this specific product is free from palm olein oil.

Recommended

Lebenswert Stage 1

Lebenswert Bio

Produced to Bioland organic standards, which are stricter than EU Organic requirements. Stage 1 is strictly lactose-based and free from the starch and maltodextrin found in many European imports.

Recommended

Goat Milk Infant Formula

Bubs Australia

Uses fresh goat milk rather than powder, which preserves natural nutritional value. It is naturally A2 and holds a Clean Label Project Purity Award for low contaminant levels.

Recommended
A2 Organic Milk Infant Formula

Baby's Only

An affordable organic option that prioritizes A2 beta-casein proteins and lactose. It explicitly avoids the 'brown rice syrup' appearing in previous formulations, offering a clean, gentle profile.

Recommended
👌

HA Combiotic (Stage PRE)

HiPP

Features hydrolyzed proteins and a unique combination of probiotics and prebiotics (GOS) to support gut flora. Note that Stage 1 and up may contain starch, so check the label if avoiding thickeners.

Acceptable
🚫

NeuroPro Gentlease

Enfamil

The first ingredient is corn syrup solids, replacing the lactose your baby needs for development. While the proteins are hydrolyzed, the high glycemic index of the carbohydrate source is concerning.

Avoid
🚫
360 Total Care Sensitive

Similac

Contains 98% less lactose than standard formula, replacing it with corn syrup and sucrose (table sugar). This high sugar content is unnecessary for infants who do not have a diagnosed congenital lactase deficiency.

Avoid
🚫

Sensitivity Premium Infant Formula

Member's Mark (Sam's Club)

Like the name-brand version it mimics, this formula relies on corn syrup and sucrose as primary ingredients. It lacks the nutritional benefits of lactose for gut and brain health.

Avoid
🚫

Organic Sensitive Formula

Happy Baby

Despite the organic label, the first three ingredients include maltodextrin and glucose syrup solids. It removes healthy lactose in favor of processed fillers.

Avoid
🚫

Organic Sensitive Formula

Burt's Bees Baby

Do not confuse with their 'Ultra Gentle' line; this 'Sensitive' version lists organic glucose syrup solids as the second ingredient. It essentially swaps dairy sugar for processed sugar.

Avoid
🚫

Gentle Infant Formula

Up & Up (Target)

The very first ingredient is corn syrup, following the standard industry shortcut for 'gentle' formulas. It offers poor value nutritionally compared to lactose-based store brands.

Avoid
🚫

Gentle Infant Formula

Parent's Choice (Walmart)

Identical issues to other store brands: corn syrup is the primary ingredient. It provides a high sugar load without the ease of digestion offered by A2 or lactose-based gentle options.

Avoid
⚠️

Good Start GentlePro

Gerber

Uses hydrolyzed whey protein which is excellent, but contains corn maltodextrin and palm olein. Palm olein can bind with calcium to form 'soaps' in the gut, potentially causing constipation.

Use Caution
🚫

Organic Sensitivity Formula

Earth's Best

The first ingredient is organic glucose syrup solids, constituting a significant portion of the product. It removes lactose, which is critical for prebiotic functioning in the gut.

Avoid
🚫

Reguline

Enfamil

Marketed for constipation relief, yet it uses corn syrup solids and palm olein oil. Palm oil is structurally linked to harder stools, contradicting the product's primary claim.

Avoid
⚠️

Pro-Care Infant Formula

Kirkland Signature (Costco)

An excellent value lactose-based formula, but it relies on palm olein oil. For babies specifically prone to constipation or hard stools, palm oil should be avoided.

Use Caution
🚫

Good Start Soy

Gerber

Soy protein is structurally more difficult for many infants to digest than milk protein and is high in phytates. Unless medically necessary, soy and its accompanying corn syrup should be avoided.

Avoid

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